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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-05 21:29:28 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:11:48 -0800
commit936f482af1743141d637483ec10eb881537c26dc (patch)
tree913da89a4d9f4038c510c9ecf2f5957b0f6d167f /include
parent6e02493a7f33ac89e698b980a657d77ab2749eaf (diff)
downloadblackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.tar.gz
blackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.zip
[SPARC64]: Add initial code to twiddle %gl on trap entry/exit.
Instead of setting/clearing PSTATE_AG we have to change the %gl register value on sun4v. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/asm-sparc64/cpudata.h5
-rw-r--r--include/asm-sparc64/head.h4
2 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h
index 4f28a85c1043..8666440c89af 100644
--- a/include/asm-sparc64/cpudata.h
+++ b/include/asm-sparc64/cpudata.h
@@ -73,6 +73,11 @@ struct cpuid_patch_entry {
extern struct cpuid_patch_entry __cpuid_patch, __cpuid_patch_end;
#endif
+struct gl_1insn_patch_entry {
+ unsigned int addr;
+ unsigned int insn;
+};
+extern struct gl_1insn_patch_entry __gl_1insn_patch, __gl_1insn_patch_end;
#endif /* !(__ASSEMBLY__) */
#define TRAP_PER_CPU_THREAD 0x00
diff --git a/include/asm-sparc64/head.h b/include/asm-sparc64/head.h
index 731c842f3d11..ff76c0981b63 100644
--- a/include/asm-sparc64/head.h
+++ b/include/asm-sparc64/head.h
@@ -4,6 +4,10 @@
#include <asm/pstate.h>
+ /* wrpr %g0, val, %gl */
+#define SET_GL(val) \
+ .word 0xa1902000 | val
+
#define KERNBASE 0x400000
#define PTREGS_OFF (STACK_BIAS + STACKFRAME_SZ)
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